#!/usr/bin/python3
# -*- coding: utf-8 -*-

#function
#**********************************************
print( '===================<function>====================' )
print( 'function' )
def m_abs( x ):
    if x < 0:
        return -x
    else:
        return x

print( 'my abs function write out %d' % m_abs( 0 ) )
print( 'my abs function write out %d' % m_abs( -1 ) )
print( 'my abs function write out %d' % m_abs( -9 ) )
print( 'my abs function write out %d' % m_abs( 10 ) )
print( '===================</funciton>====================' )
#**********************************************
